Cylinder lock



Dec. 9, 1930. R. G. M. HoMoLLE 1,784,444

'CYLINDER LocK Filed Aug. 18, 1927 Fi 3,6 MWI/wwf KME/ET 7./7. HNL LE N/WW Patented Dec. 9, 17930 UNITED.. STATES PATENT oFFlcE ROBERT GEORGES MARIE HOMOLLE, OF PARIS, FRANCE, ASSIGNOR TO SOCIETE` BO'UBNISIEIN BEAU Sc CIE., OF` PARIS, FRANCE CYLINDER LOCK Application filed August 18, 1927, Serial No. 213,909, and in France September 6, 1926.

Y in the art, but in all the Vprior devices the displacement of the tumblers varies accord-l ing to the depthof the notch in the corresponding keys. Such keys dier from each other in the depth of the notches. On the contrary the device here disclosed presents a lock operated by a key having notches and bits of equal depth. The different combinations for the various locks are obtained'by variation in axial location of the key bits and corresponding tumblers, such a construction beingy particularly advantageous in the manufacture of a set of locks whichmay be operated by ya master and individual keys.

The characteristic of said cylinder lock resides in the fact that the plate tumblers with which it is provided are adapted to be moved either right or left or to be unaffected by the turning of the key. Said plate tumblers, the number of which is predetermined and variable according to different requirements, are driven by the key so that any key except the proper one would yonly close said plate tumblers tighter. 1

In order to make the invention more clearly understood, 1 have illustrated, as an example, an embodiment. thereof in and by drawings appended hereto and wherein:

igure 1 shows in vertical section a com pletely assembled device;

Figure 2 illustrates a vertical section of cap 2 and circular member 3.

Figure 2a, is a transverse section on the line ll-Il of Figure 2.

Figure 2b is a bottom'view of Figure 2.

Figure 3 is a vertical section of circular member 11.

Figure 3c is a transverse section on the line HI Vlll of Figure 3 and Figure 3b is a bottom view thereof;`

Figure 4 is a bottom view of member 4 and igure 4a is a vertical section on line IV-,IV f Figure 4.

Figures 5, 5a and 5b are plan views ofthe washers 28, plate tumblers 33 and 34, respectively.

Figures 6, 6a and 6b are front, top and side views, respectively, of the key.

The cylinder lock is composed of a circular shell 1 (Figure 1) clamped between the cap 2 of member 3 (Figure 2) and member 4 (Figure 4) forming a closure.

The circular member 3 (Figure 2) has its cao 2 rovided with an a erture 5 affording b a passage for the key; said member has two openings 6 and 7 which are covered by shell 1, thus leaving a clearance of exactly the same depth as said members thiclmess,

which clearance is required to permit the plate tumblers to be shifted as will be hereinafter erplained.v At its lower end, said member 3 is provided with a tenon 8 rand three threaded holes 9 for screws, as well as a. cut-away part 10. Y

The circular member 11 (Figure 3) which encloses the plate tuniblers, has through its top 12, an aperture to afford a passage or way for the key; its lateral faces provided with apertures 13 and 14, leave as solid portions walls 15 and 16 the inner faces of which are parallel. Apertures 13 and 14 register with openings 6 and 7 in member 3 so Vas to permit shiftingof the plate tumblers. )Vall 15 has onv for screws.

Closure of the cylinder lock is effected by p member 4 (Figure 4) which has at its upper part a raised portion 25. Said member 4 is provided on the one hand with an opening 26 in which pipe 22 is adaptedto tit, and, on the other hand, with ahole 27 for the pin. At 9 are provided threaded holes for screws in order to permit said closingl member 4 "to Y be are alsoprovided with an aperture 32 `afford-r in" a Way for the key. f he vplate, tumblers 33 and 34 are made ot a certain thickness which may vary accordsecured to member 3 forming the body of the Y Y c o cylinder lock; at 8 is provided ahole for affording a passage to tenon 8 of member 3.

The plate tumblers which are positioned Within member 11 are spaced from one another` by very thin disks or Washers 28 V(Figure .l Saidwasher's have their circular portions 29 and 30 registering with the apertures 4 13 and 14 of member 11 and carry onr one of c. their straight faces a spur 31 adapted to register with slot ot'said member 11. Said disks ing-to the` particular case, and their curved surfaces 35-36 and 37-38 revister with the apertures and 14 of member 11 (Figure Said. platetumblers havea recessed lgroove 39,` 40 permitting the pin 17 `to pass at17. u* f kThe plate tumblers33 are provided with a ke receiv'in(Y a erture 41 oderinv iro'ections I n n b a v 42, the dimensions of said aperture 41 permit-` tingthe-keypr'topass and ensuring su'liieient playv inl orderthatlthe bits or projections ofk fthefkey Will, ron said'key being turned,shii`t Vto the'right or leftvthe plate tumbler 33 by meansfoftheiioroeexerted by the bitsot' the key-onprojections 42. For' this purpose, said tuinbler'33has its aperture oiisct toone side; i

ofits rairis in order to rotter a solidportion 43 Vnarrower than its other solid portion 44, an

"arrangement designed tok permit the plate v combination adopted.`

tuinbl'ers 33 to be positioned With their por tion 43 either registering With aperture 13er aperturek 14 ofl member y11, according. tothe Plate tumblers 34 have a key receiving aperture 45 hollowed out with projections 46 permittingthe ykey to pass throughthe middie thereof', their solidV portions 47 being,

therefore, equal. i They are positioned at lthe proper placesv according to the combination adoptedin the clearance oi member 11 with tumblers 33 always having theirportions`47 corresponding toy apertures 13 and14 of mem,

ber 11.

` Ovving to thel arrangementV of 'platectuniblers 33and 34, the bits of the key, through theirv action-on the projections@ and 46 of plate tumblers and 34 willl cause said tum-v Vblers to be moved laterally eitherito the right orjleft according to the manner in which they are lositioned, .which motion Will take place inf c earancese and 7 oi member 3 and, be-y sides, Willbe limited by the pin 17y loca-ted at Y 17in accordance with the lengtlrof the outer grooves 39 andy 40 of plate tumblers 33 and 34. Allthe plate tumblers are properly kept in pl`ace,while the' play required to permit them tomoveis allowed, by a member 48 of suitable thicknessythejf aperture of which is cone shaped so asto receive tip53 of the key. -K Theshank 49 of the key has projections `'of Whichlacks a slit for sliiftin movement of said key.`

orVL bits 50, 51 'andV indents 52y vvhereby the 'Y yplateV tumblers oftheV lock can be moved or'Y Y not Vaccording to the combinations desired to beobtained, and. the set of bits or of in,- dents is completed by a conical portion 53 Vadapted .to vfit yinto the correspondingy conical aperture of member 48.

The cylinder lock can andany combinations of special keys and master-keys by one 'orY several tumblers vper lock `being madefinoperative, said inoperativeness being distributed according'to any combinations ydesired to be obtained. For

andthe bolt I Having now particularly ascertained and describedthe natureV of my' said invention as Well. as the manner in Wh1ch the sameis to be performed, I declare that what I claim plate tumblers ycharacterized `by offset key receiving apertures in some of said plate tumblers, symmetricallyplaced key receiw' .l ing apertures inthe remainingplate tum-V blers and projections symmetrically andopypositely positioned infsaidjkey receiving apertures .so thata key inserted through said lkey receiving apertures will actuate said plate tumblers upon rotary movement-0f said key.y

platetumblers characterized by .ofset key receiving apertures, ,invr some of said plate tumblers, Jsymmetrically placed. key receiv-y ing apertures in the remaining'y plate tum- 1.!A cylinder lock yhaving a plurality of beA suited. for all Y H oylinderxlock having a plurality ofV blers and projections symmetricallyand opl positelyvv positioned in said key n receiving apertures so that a key inserted through said key receiving apertiures'having key bits integraljtherewith and Lin yspaced relation thereon will engagesaidprojections to move corresponding plate tumblers upon rotary 3. A cylinderk lock having a plurality of plate Ytumblers according ..to claim 2 and having` recessed groovesy inv said plate tumblersand a pin'mounted in said lock engaging said recessed grooves to limit the transverse movement of said plate tumblers.y

i' In testimony .WhereofI aiiix mysignature ROBERT GEORGES MARIE `HOIOLLI'I.

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